https - Ngrok 错误 '502 bad gateway'

Question

使用任何类型的 Web 应用程序都是新手，我一直在尝试慢慢构建 Facebook Messenger Bot。当我尝试使用 ngrok 时，我无法访问给定的地址，即:

ngrok http 5000

是我在命令行中输入的内容，它返回的是:

ngrok by @inconshreveable

Session Status                online
Version                       2.1.18
Region                        United States (us)
Web Interface                 http://127.0.0.1:4040
Forwarding                    http://ea986ca5.ngrok.io -> localhost:5000
Forwarding                    https://ea986ca5.ngrok.io -> localhost:5000

Connections                   ttl     opn     rt1     rt5     p50     p90
                              0       0       0.00    0.00    0.00    0.00

但是当我取地址' https://ea986ca5.ngrok.io ' 根据 Facebook 开发人员页面的要求，它说:

The connection to http://ea986ca5.ngrok.io was successfully tunneled to your
ngrok client, but the client failed to establish a connection to the local  
address localhost:5000.


Make sure that a web service is running on localhost:5000 and that it is a 
valid address.


The error encountered was: dial tcp [::1]:5000: connectex: No connection 
could be made because the target machine actively refused it.

我的本地端口有问题吗？谢谢!

Answer 1

这对我有用

ngrok.exe http -host-header=rewrite localhost:

例如 ngrok.exe http -host-header=rewrite localhost:5219

我使用 Visual Studio 2017 不知道它是否会影响 anthing。